CN113183654A - All-round alcohol-free fountain solution and preparation method thereof - Google Patents
All-round alcohol-free fountain solution and preparation method thereof Download PDFInfo
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- CN113183654A CN113183654A CN202110434709.2A CN202110434709A CN113183654A CN 113183654 A CN113183654 A CN 113183654A CN 202110434709 A CN202110434709 A CN 202110434709A CN 113183654 A CN113183654 A CN 113183654A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N3/00—Preparing for use and conserving printing surfaces
- B41N3/08—Damping; Neutralising or similar differentiation treatments for lithographic printing formes; Gumming or finishing solutions, fountain solutions, correction or deletion fluids, or on-press development
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Abstract
The invention relates to the technical field of fountain solution preparation, in particular to an all-round alcohol-free fountain solution and a preparation method thereof; the composition comprises the following raw materials in parts by weight: 0.2-0.5 part of defoaming auxiliary agent for an aqueous system, 6-7 parts of sodium hydroxide, 26-29 parts of cleaning dispersant, 5-8 parts of protective auxiliary agent, 2-3 parts of hexadecylamine chloride, 1-3 parts of magnesium nitrate, 1-3 parts of sodium nitrite, 45-55 parts of glycerol, 50-60 parts of MEG, 130-150 parts of surfactant, 2-5 parts of bactericide and 180-185 parts of deionized water; the fountain solution prepared by the invention has the advantages of low conductivity, excellent antibacterial property, no damage to the plate, high printing resistance, and no contamination during machine halt; moreover, the ink does not contain alcohol, so that the pollution of the alcohol to the environment is effectively avoided, and the adverse effect of the alcohol on the glossiness of the ink and the damage of the ink to the rubber roller are effectively reduced; the application range is also wider.
Description
Technical Field
The invention relates to the technical field of fountain solution preparation, in particular to an all-round alcohol-free fountain solution and a preparation method thereof.
Background
The fountain solution is an indispensable chemical assistant in the printing process of a color press, and forms a uniform water film on the blank part of a printing plate to resist the ink on the pictures and texts from infiltrating into the blank part and prevent the plate from being dirty. Fountain solutions are also known as fountain solutions, and fountain solutions. The fountain solution contains a wetting agent to modify the surface tension of the plate surface, and the PREMIER FOUNT with the addition of a wetting control component also helps to reduce the amount of ink while achieving clear dots and vivid colors. The anti-corrosive composition helps protect your machinery. It is a highly concentrated product, and needs to be diluted before use.
In offset printing, the role played by fountain solutions is mainly represented in three aspects:
firstly, forming a water film on a blank part of a printing plate;
secondly, supplementing a hydrophilic layer damaged in the printing process;
and thirdly, reducing the surface temperature of the printing plate.
The function of the alcohol in the fountain solution is also three aspects:
1. the surface tension of water is reduced, and the water is favorably spread and wetted on the PS plate;
2. the spreading and wetting speed of water is accelerated, and the alcohol is a small molecular compound and has high diffusion speed;
3. the alcohol is volatile, so that the temperature of the PS printing plate surface can be reduced, and the moisture in the condensed air is condensed on the surface of the printing plate. Without the proposal of the concept of environmental protection printing, alcohol fountain solution may be used for a long time, however, the alcohol component in the currently used fountain solution mainly comprises isopropanol which is a flammable organic solvent with low boiling point and high volatility and is harmful to human body, and in addition, the alcohol also has influence on the glossiness of the ink and damages the rubber roller. More seriously, the isopropyl alcohol emissions also pollute the environment. Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide an all-purpose alcohol-free fountain solution and a preparation method thereof.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the all-round alcohol-free fountain solution and the preparation method thereof, and the prepared fountain solution has the advantages of low conductivity, excellent antibacterial performance, no damage to the plate, high printing resistance and no contamination during machine halt; moreover, the ink does not contain alcohol (isopropanol), so that the pollution of the alcohol to the environment is effectively avoided, and the adverse effect of the alcohol on the glossiness of the ink and the damage of the alcohol on the rubber roller are effectively reduced; the high-quality fountain solution is suitable for UV ink, gold and silver ink and common ink printing, all types of sheet printing machines and traditional and mixed fountain systems.
In order to achieve the purpose, the invention provides the following technical scheme:
the all-round alcohol-free fountain solution comprises the following raw materials in parts by weight: 0.2-0.5 part of defoaming auxiliary agent for a water-based system, 6-7 parts of sodium hydroxide, 26-29 parts of cleaning dispersant, 5-8 parts of protective auxiliary agent, 2-3 parts of hexadecylamine chloride, 1-3 parts of magnesium nitrate, 1-3 parts of sodium nitrite, 45-55 parts of glycerol, 50-60 parts of MEG, 130-150 parts of surfactant, 2-5 parts of bactericide and 180-185 parts of deionized water.
Furthermore, the defoaming auxiliary agent for the aqueous system is selected from any one or a mixture of silicon polydimethylsiloxane, emulsified silicone oil and organic silicon.
Furthermore, the cleaning dispersant is any one of alkyl salicylate and naphthenate.
Further, the preparation method of the protection aid comprises the following steps:
the ratio of the amount of the substances is 1: 1.0-1.5 of myristic acid and tetraethylene triamine are put into a reaction kettle, the temperature of the reaction kettle is set to be 140-180 ℃, and the reaction is carried out for 4-8 hours under the temperature; after the reaction is finished, putting an octadecane unsaturated fatty acid dimer with the amount of 0.4-0.6 time of that of myristic acid into the reaction kettle, and then carrying out heat preservation reaction for 3-7 h at the temperature of 150-190 ℃ in the atmosphere of inert gas; after the reaction is finished, raising the temperature in the kettle to 220-280 ℃, and dehydrating for 3-7 hours at the temperature; finally, 1, 3-butadiene-1-carboxylic acid with the amount of 3-6 times of that of the octadecane unsaturated fatty acid dimer is added into the mixed components obtained in the kettle, and the mixture is subjected to heat preservation reaction at the temperature of 90-110 ℃ for 3-6 hours; and after the reaction is finished, obtaining a substance in the kettle, namely a finished product of the metal protectant.
Further, the preparation method of the surfactant comprises the following steps:
firstly, preparing an intermediate product;
weighing a proper amount of dimethyltetradecylamine, putting the dimethyltetradecylamine and a hydrochloric acid solution with the mass being 0.8-1.5 times of that of dimethyltetradecylamine and the concentration being 12-20% into a reaction device, and performing ultrasonic dispersion for 20-30 min; raising the temperature of the obtained mixed solution to 50-60 ℃; then dropwise adding a proper amount of ammonium salt aqueous solution into the mixed solution while stirring; after the dropwise addition is finished, carrying out reflux reaction on a mixed system obtained in the reaction kettle for 3-5 hours, then sequentially carrying out post-treatment procedures on the mixed system, and storing the obtained solid product for later use;
secondly, preparing a surfactant;
putting the obtained solid product into a reaction kettle, raising the temperature in the kettle to melt the solid product, then putting 15-25% by mass of maleic anhydride into the reaction kettle, mixing and stirring uniformly, putting a proper amount of 4-methylbenzenesulfonic acid into the kettle, and carrying out heat preservation reaction at the temperature of 100-120 ℃ for 2-5 hours; after the reaction is finished, naturally cooling the temperature of the mixture in the kettle to 60-75 ℃, then adding a proper amount of reaction liquid into the mixture, uniformly dispersing the mixture by ultrasonic, and carrying out heat preservation reaction at the temperature of 70-90 ℃ for 2-4 h; after the reaction is finished, naturally cooling the feed liquid obtained in the reaction kettle to room temperature and then discharging; the obtained liquid substance is the finished product of the surfactant.
Furthermore, in the preparation process of the intermediate product, the concentration of the ammonium salt water solution is 30-45%; the ammonium salt is cetyl trimethyl ammonium bromide, and the dosage of the cetyl trimethyl ammonium bromide is 2-3 times of the mass of the dimethyl tetradecylamine.
Furthermore, in the preparation process of the intermediate product, the post-treatment process sequentially comprises the processes of primary concentration, temperature reduction, alcohol washing, filtration, secondary concentration and drying.
Furthermore, in the preparation process of the surfactant, a sodium sulfite solution with the concentration of 8-15% is selected as a reaction solution, and the dosage of the sodium sulfite solution is 1.5-3.0 times of the mass of the solid product.
Furthermore, the bactericide is any one of dodecyl dimethyl benzyl ammonium chloride, dodecyl dimethyl benzyl ammonium bromide or polyquaternary ammonium salt.
A preparation method of all-round alcohol-free fountain solution comprises the following steps:
accurately weighing the raw materials of the components according to the formula, transferring half of deionized water and surfactant into a stirring kettle, and adding sodium hydroxide, a cleaning dispersant, a protection auxiliary agent, hexadecylamine chloride, magnesium nitrate, sodium nitrite, glycerol, MEG5 and a defoaming auxiliary agent for an aqueous system while stirring; and (3) after all the components are uniformly mixed, adding the rest raw materials into the mixture, performing ultrasonic dispersion uniformly, and subpackaging to obtain the all-round alcohol-free fountain solution finished product.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
1. according to the invention, myristic acid, tetraethylene triamine, octane unsaturated fatty acid dimer, 1, 3-butadiene-1-carboxylic acid and the like are used as raw materials for preparing the metal protective agent, the metal protective agent is prepared through condensation reaction, and the metal protective agent is used as a raw material of a fountain solution, so that the stability is good, and the probability of causing oil-water emulsification can be reduced. Moreover, the rubber roller can be protected to a certain extent, and the phenomenon that the rubber roller is corroded is reduced. In addition, the compound has a good sterilization effect by the mutual cooperation of the compound, hexadecylamine chloride and a bactericide, and can effectively prevent bacteria from breeding in fountain solution.
2. The invention takes dimethyl tetradecyl amine, ammonium salt water solution, maleic anhydride, 4-methyl benzenesulfonic acid, sodium sulfite and the like as raw materials for preparing the surfactant, the prepared surfactant product has smaller surface tension compared with the traditional surfactant, and the surfactant product is used as the raw material of the fountain solution, can effectively reduce the surface tension of the fountain solution, is beneficial to more quickly and uniformly spreading and wetting the fountain solution on a PS plate, is difficult to dry by water on a non-image-text part, is difficult to emulsify ink, and effectively solves the problem that the common fountain solution in the market damages a rubber roller due to poor water retention and film forming properties.
3. The fountain solution prepared by the invention does not contain alcohol (isopropanol), thereby not only effectively avoiding the pollution of the alcohol to the environment, but also effectively reducing the adverse effect of the alcohol on the glossiness of the printing ink and the damage of the alcohol on the rubber roller. Furthermore, it can provide the printed product with faster ink drying speed and more perfect color. The fountain solution prepared by the invention has the advantages of low conductivity, excellent antibacterial performance, no damage to the plate, high printing resistance and no contamination during machine halt. The high-quality fountain solution is suitable for UV ink, gold and silver ink and common ink printing, all types of sheet printing machines and traditional and mixed fountain systems.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be further described with reference to the following examples.
Example 1
The all-round alcohol-free fountain solution comprises the following raw materials in parts by weight: 0.2 part of defoaming auxiliary agent for a water-based system, 6 parts of sodium hydroxide, 26 parts of cleaning dispersant, 5 parts of protection auxiliary agent, 2 parts of hexadecylamine chloride, 1 part of magnesium nitrate, 1 part of sodium nitrite, 45 parts of glycerol, 50 parts of MEG, 130 parts of surfactant, 2 parts of bactericide and 180 parts of deionized water.
The defoaming assistant for the water system is silicon polydimethylsiloxane.
The cleaning dispersant is alkyl salicylate.
The preparation method of the protective additive comprises the following steps:
the ratio of the amount of the substances is 1: 1.0 of myristic acid and tetraethylene diamine is put into a reaction kettle, the temperature of the reaction kettle is set to be 140 ℃, and the reaction is carried out for 4 hours under the temperature; after the reaction is finished, putting octadecane unsaturated fatty acid dimer with the amount of 0.4 time of that of myristic acid into the reaction kettle, and then keeping the temperature of the octadecane unsaturated fatty acid dimer at 150 ℃ for reaction for 3 hours in the atmosphere of inert gas; after the reaction is finished, raising the temperature in the kettle to 220 ℃, and dehydrating for 3 hours at the temperature; finally, 1, 3-butadiene-1-carboxylic acid with the amount of the substance being 3 times of that of the octadecane unsaturated fatty acid dimer is added into the mixed components obtained in the kettle, and the mixture is reacted for 3 hours at the temperature of 90 ℃; and after the reaction is finished, obtaining a substance in the kettle, namely a finished product of the metal protectant.
The preparation method of the surfactant comprises the following steps:
firstly, preparing an intermediate product;
weighing a proper amount of dimethyltetradecylamine, putting the dimethyltetradecylamine and a hydrochloric acid solution with the mass being 0.8 time and the concentration being 12% of the dimethyltetradecylamine into a reaction device together, and performing ultrasonic dispersion for 20 min; raising the temperature of the obtained mixed solution to 50 ℃; then dropwise adding a proper amount of ammonium salt aqueous solution into the mixed solution while stirring; after the dropwise addition is finished, carrying out reflux reaction on the mixed system obtained in the reaction kettle for 3 hours, then sequentially carrying out post-treatment procedures on the mixed system, and storing the obtained solid product for later use;
secondly, preparing a surfactant;
putting the obtained solid product into a reaction kettle, raising the temperature in the kettle to melt the solid product, then putting 15% by mass of maleic anhydride into the reaction kettle, mixing and stirring the mixture evenly, then putting a proper amount of 4-methylbenzenesulfonic acid into the kettle, and carrying out heat preservation reaction for 2 hours at the temperature of 100 ℃; after the reaction is finished, naturally cooling the temperature of the mixture in the kettle to 60 ℃, then adding a proper amount of reaction liquid into the mixture, performing ultrasonic dispersion uniformly, and performing heat preservation reaction at the temperature of 70 ℃ for 2 hours; after the reaction is finished, naturally cooling the feed liquid obtained in the reaction kettle to room temperature and then discharging; the obtained liquid substance is the finished product of the surfactant.
In the preparation process of the intermediate product, the concentration of the ammonium salt aqueous solution is 30 percent; the ammonium salt is cetyl trimethyl ammonium bromide, and the dosage of the ammonium salt is 2 times of the mass of the dimethyltetradecylamine.
In the preparation process of the intermediate product, the post-treatment process sequentially comprises the processes of primary concentration, cooling, alcohol washing, filtering, secondary concentration and drying.
In the preparation process of the surfactant, sodium sulfite solution with the concentration of 8% is selected as reaction liquid, and the dosage of the sodium sulfite solution is 1.5 times of the mass of the solid product.
The bactericide is dodecyl dimethyl benzyl ammonium chloride.
A preparation method of all-round alcohol-free fountain solution comprises the following steps:
accurately weighing the raw materials of the components according to the formula, transferring half of deionized water and surfactant into a stirring kettle, and adding sodium hydroxide, a cleaning dispersant, a protection auxiliary agent, hexadecylamine chloride, magnesium nitrate, sodium nitrite, glycerol, MEG5 and a defoaming auxiliary agent for an aqueous system while stirring; and (3) after all the components are uniformly mixed, adding the rest raw materials into the mixture, performing ultrasonic dispersion uniformly, and subpackaging to obtain the all-round alcohol-free fountain solution finished product.
Example 2
The all-round alcohol-free fountain solution provided by the embodiment is substantially the same as the embodiment 1 in preparation method, and the main differences are as follows:
the all-round alcohol-free fountain solution comprises the following raw materials in parts by weight: 0.3 part of defoaming auxiliary agent for an aqueous system, 6.5 parts of sodium hydroxide, 28 parts of cleaning dispersant, 6 parts of protection auxiliary agent, 2.5 parts of hexadecylamine chloride, 2 parts of magnesium nitrate, 2.5 parts of sodium nitrite, 50 parts of glycerol, 55 parts of MEG, 140 parts of surfactant, 3 parts of bactericide and 183 parts of deionized water.
The defoaming assistant for the water-based system is emulsified silicone oil.
The cleaning dispersant is any one of naphthenate.
The bactericide is dodecyl dimethyl benzyl ammonium bromide.
Example 3
The all-round alcohol-free fountain solution provided by the embodiment is substantially the same as the embodiment 1 in preparation method, and the main differences are as follows:
the all-round alcohol-free fountain solution comprises the following raw materials in parts by weight: 0.5 part of defoaming auxiliary agent for a water-based system, 7 parts of sodium hydroxide, 29 parts of cleaning dispersant, 8 parts of protection auxiliary agent, 3 parts of hexadecylamine chloride, 3 parts of magnesium nitrate, 3 parts of sodium nitrite, 55 parts of glycerol, 60 parts of MEG, 150 parts of surfactant, 5 parts of bactericide and 185 parts of deionized water.
The defoaming auxiliary agent for the water-based system is organic silicon.
The cleaning dispersant is alkyl salicylate.
The bactericide is polyquaternium.
Comparative example 1
The all-round alcohol-free fountain solution provided by the embodiment is substantially the same as the embodiment 1 in preparation method, and the main differences are as follows: the surfactant used in the raw materials is a common non-ionic surfactant (tween 80 is selected in the embodiment) which is commercially available;
comparative example 2
The all-round alcohol-free fountain solution provided by the embodiment is substantially the same as the embodiment 1 in preparation method, and the main differences are as follows: the raw materials do not contain a protection auxiliary agent;
comparative example 3
The all-round alcohol-free fountain solution provided by the embodiment is substantially the same as the embodiment 1 in preparation method, and the main differences are as follows: the raw materials do not contain hexadecylamine chloride;
performance testing
Taking equal amount of fountain solutions prepared in examples 1-3 and comparative examples 1-3, and carrying out performance detection on each group of fountain solutions, wherein the detection method comprises the following steps:
1. measurement of surface tension: selecting a JYW-200D automatic interfacial tension instrument produced by Chengdi Shipeng detection equipment Limited, and determining the surface tension of each group of fountain solution according to GB/T22237-; the results obtained are reported in table 1;
2. and (3) VOC emission measurement: respectively measuring the VOC emission of each group of fountain solution by adopting a VOC emission standard measuring method; the VOC discharge amount of the alcohol fountain solution is set as 1, the VOC discharge amount of other groups of fountain solutions is calculated, and the obtained result is recorded in the table 1;
3. and (3) measuring the ink emulsification rate and the water retention: diluting the fountain solution of each group to 3% by using distilled water, adding 50g of black ink and 50g of diluted fountain solution into a container at one time, stirring for 1 hour at 100r/min, standing for 10 minutes, layering and separating unabsorbed fountain solution and ink, and calculating the ink emulsion rate according to the following formula:
the ink emulsification rate = absorbed fountain solution volume/(ink volume + absorbed fountain solution volume) × 100%, the emulsified ink in the test is placed on a high-speed centrifuge to start stirring at the speed of 1000 r/min, the stirring time is about 20min, and water is separated from the emulsified ink through the high-speed centrifugation process, so that the index for measuring the water retention of the emulsified ink can be based on the time for precipitating the aqueous solution. The shorter the time for the fountain solution to precipitate, the poorer the water retention of the emulsified ink, and the longer the time for the fountain solution to precipitate, the better the water retention of the emulsified ink, the longest the time for 4 grades, the shortest the time for 1 grade, the better the tension, the better the film-forming property, and vice versa, as measured by a tensiometer, and the obtained results are recorded in table 1;
4. determination of the conductivity of the fountain solution: the conductivity of each set of fountain solutions was measured using a conductivity meter and the results are reported in table 1;
5. determination of antibacterial rate: the conventional microorganism detection method is adopted to detect the sterilization effect of each group of fountain solution, and the obtained result is recorded in the table 2;
TABLE 1
| Test items | Surface tension (N/m) of the surfactant in the present invention | Discharge amount of VOC | Water retention property (grade) | Ink emulsification Rate (%) | Conductivity of fountain solution (mu s/cm) |
| Example 1 | 0.025 | 0.06 | 4 | 20.36 | 823 |
| Example 2 | 0.028 | 0.09 | 4 | 20.65 | 835 |
| Example 3 | 0.027 | 0.13 | 4 | 20.63 | 846 |
| Comparative example 1 | ———— | 0.04 | 2 | 25.76 | 732 |
| Comparative example 2 | ———— | 0.06 | 3 | 22.65 | 776 |
| Comparative example 3 | ———— | 0.06 | 4 | 20.62 | 803 |
TABLE 2
By analyzing the relevant data in the tables, the fountain solution prepared by the method not only has the advantages of low conductivity, excellent antibacterial performance, no damage to the plate, high printing resistance and no contamination during machine halt; moreover, the ink does not contain alcohol, so that the pollution of the alcohol to the environment is effectively avoided, and the adverse effect of the alcohol on the glossiness of the ink and the damage of the ink to the rubber roller are effectively reduced; the application range is also wider. Has good market force. Therefore, the fountain solution prepared by the method has wider market prospect and is more suitable for popularization.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. An all-round alcohol-free fountain solution is characterized in that: the composition comprises the following raw materials in parts by weight: 0.2-0.5 part of defoaming auxiliary agent for a water-based system, 6-7 parts of sodium hydroxide, 26-29 parts of cleaning dispersant, 5-8 parts of protective auxiliary agent, 2-3 parts of hexadecylamine chloride, 1-3 parts of magnesium nitrate, 1-3 parts of sodium nitrite, 45-55 parts of glycerol, 50-60 parts of MEG, 130-150 parts of surfactant, 2-5 parts of bactericide and 180-185 parts of deionized water.
2. The universal alcohol-free fountain solution according to claim 1, wherein: the defoaming auxiliary agent for the aqueous system is any one or a mixture of silicon polydimethylsiloxane, emulsified silicone oil and organic silicon.
3. The universal alcohol-free fountain solution according to claim 1, wherein: the cleaning dispersant is any one of alkyl salicylate and naphthenate.
4. The universal alcohol-free fountain solution according to claim 1, wherein: the preparation method of the protective assistant comprises the following steps:
the ratio of the amount of the substances is 1: 1.0-1.5 of myristic acid and tetraethylene triamine are put into a reaction kettle, the temperature of the reaction kettle is set to be 140-180 ℃, and the reaction is carried out for 4-8 hours under the temperature; after the reaction is finished, putting an octadecane unsaturated fatty acid dimer with the amount of 0.4-0.6 time of that of myristic acid into the reaction kettle, and then carrying out heat preservation reaction for 3-7 h at the temperature of 150-190 ℃ in the atmosphere of inert gas; after the reaction is finished, raising the temperature in the kettle to 220-280 ℃, and dehydrating for 3-7 hours at the temperature; finally, 1, 3-butadiene-1-carboxylic acid with the amount of 3-6 times of that of the octadecane unsaturated fatty acid dimer is added into the mixed components obtained in the kettle, and the mixture is subjected to heat preservation reaction at the temperature of 90-110 ℃ for 3-6 hours; and after the reaction is finished, obtaining a substance in the kettle, namely a finished product of the metal protectant.
5. The all-purpose alcohol-free fountain solution according to claim 1, wherein the surfactant is prepared by a method comprising the following steps:
firstly, preparing an intermediate product;
weighing a proper amount of dimethyltetradecylamine, putting the dimethyltetradecylamine and a hydrochloric acid solution with the mass being 0.8-1.5 times of that of dimethyltetradecylamine and the concentration being 12-20% into a reaction device, and performing ultrasonic dispersion for 20-30 min; raising the temperature of the obtained mixed solution to 50-60 ℃; then dropwise adding a proper amount of ammonium salt aqueous solution into the mixed solution while stirring; after the dropwise addition is finished, carrying out reflux reaction on a mixed system obtained in the reaction kettle for 3-5 hours, then sequentially carrying out post-treatment procedures on the mixed system, and storing the obtained solid product for later use;
secondly, preparing a surfactant;
putting the obtained solid product into a reaction kettle, raising the temperature in the kettle to melt the solid product, then putting 15-25% by mass of maleic anhydride into the reaction kettle, mixing and stirring uniformly, putting a proper amount of 4-methylbenzenesulfonic acid into the kettle, and carrying out heat preservation reaction at the temperature of 100-120 ℃ for 2-5 hours; after the reaction is finished, naturally cooling the temperature of the mixture in the kettle to 60-75 ℃, then adding a proper amount of reaction liquid into the mixture, uniformly dispersing the mixture by ultrasonic, and carrying out heat preservation reaction at the temperature of 70-90 ℃ for 2-4 h; after the reaction is finished, naturally cooling the feed liquid obtained in the reaction kettle to room temperature and then discharging; the obtained liquid substance is the finished product of the surfactant.
6. The universal alcohol-free fountain solution according to claim 1, wherein: in the preparation process of the intermediate product, the concentration of the ammonium salt water solution is 30-45%; the ammonium salt is cetyl trimethyl ammonium bromide, and the dosage of the cetyl trimethyl ammonium bromide is 2-3 times of the mass of the dimethyl tetradecylamine.
7. The universal alcohol-free fountain solution according to claim 1, wherein: in the preparation process of the intermediate product, the post-treatment process sequentially comprises the processes of primary concentration, cooling, alcohol washing, filtering, secondary concentration and drying.
8. The universal alcohol-free fountain solution according to claim 1, wherein: in the preparation process of the surfactant, sodium sulfite solution with the concentration of 8-15% is selected as a reaction solution, and the dosage of the sodium sulfite solution is 1.5-3.0 times of the mass of a solid product.
9. The universal alcohol-free fountain solution according to claim 1, wherein: the bactericide is any one of dodecyl dimethyl benzyl ammonium chloride, dodecyl dimethyl benzyl ammonium bromide or polyquaternary ammonium salt.
10. The preparation method of the all-round alcohol-free fountain solution according to any one of claims 1 to 9, comprising the following steps:
accurately weighing the raw materials of the components according to the formula, transferring half of deionized water and surfactant into a stirring kettle, and adding sodium hydroxide, a cleaning dispersant, a protection auxiliary agent, hexadecylamine chloride, magnesium nitrate, sodium nitrite, glycerol, MEG5 and a defoaming auxiliary agent for an aqueous system while stirring; and (3) after all the components are uniformly mixed, adding the rest raw materials into the mixture, performing ultrasonic dispersion uniformly, and subpackaging to obtain the all-round alcohol-free fountain solution finished product.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113580799A (en) * | 2021-08-13 | 2021-11-02 | 何国茂 | Alcohol-free fountain solution |
| CN114889351A (en) * | 2022-03-07 | 2022-08-12 | 浙江创思杰印务有限公司 | High-performance fountain solution and preparation method thereof |
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| CN114889351A (en) * | 2022-03-07 | 2022-08-12 | 浙江创思杰印务有限公司 | High-performance fountain solution and preparation method thereof |
| CN114889351B (en) * | 2022-03-07 | 2023-10-31 | 浙江创思杰印务有限公司 | High-performance fountain solution and preparation method thereof |
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